Low-Pressure Green Prefabricated Self-Resetting Wall

Abstract

The present invention provides a low prestress green prefabricated self-resetting wall, which includes a hinge support wall, a hinge support column, a steel chute horizontal force transmission key, a low prestress demand self-resetting shear device and a concrete base. [Solution] The hinge support wall and hinge support column are fixed to a concrete base, and low-prestress-demand self-resetting shear devices and steel chute horizontal force transmission keys are arranged crosswise to connect the hinge support wall and hinge support column. The low-prestress-demand self-resetting shear devices are installed between different stories, and steel chute horizontal force transmission keys are installed on each floor. Under earthquake loads, side forces cause the hinge support wall and hinge support column to rotate around their respective hinge mounts. At this time, the steel chute horizontal force transmission keys only control the rotational coordination of the hinge support wall and hinge support column, while the low-prestress-demand self-resetting shear devices control the rotational coordination of the hinge support wall and hinge support column while consuming the input energy, achieving self-resetting of the structure.

Description

[Technical Field]

[0001] This invention is used for seismic design of new buildings and seismic reinforcement of existing buildings. [Background technology]

[0002] The green prefabricated self-resetting wall is a new high-performance structural technology that possesses the important attributes of "green environmental protection" and "earthquake resistance," and is closely related to China's major strategic needs. Existing green self-resetting walls, The bottom employs a flexible rocking mechanism, which is advantageous for prefabricating and assembling components and reducing damage to the wall structure; it is a bottom seam assembly type self-resetting wall. It can be divided into a bottom-hinged, assembled, self-resetting wall that resists side forces and controls residual displacement through a self-resetting, energy-consuming device.

[0003] Both of these prefabricated self-resetting walls can rotate like a rigid body under horizontal forces, their assembly concept is clear, and wall damage is significantly reduced compared to ordinary shear walls.

[0004] However, existing green modular self-resetting walls have crucial bottlenecks in terms of green complete assembly, reset mechanism, and oscillation mechanism, which significantly reduces their green environmental protection function and seismic resistance function. First, in terms of green complete assembly, the assembly process of bottom seam modular self-resetting walls requires on-site processes such as wet grout connection of the reinforcing anchor ends of prestressed post-tensioned bars and installation of prestressed actuators. On the other hand, bottom hinge-supported modular self-resetting walls require replacement of the entire self-resetting and energy consumption devices after an earthquake.

[0005] Furthermore, in terms of the reset mechanism, both of these Green modular self-resetting walls must rely on high-level prestress resetting, which increases the difficulty of component assembly, reduces the deformation capacity of the wall, and makes it difficult to solve long-term pre-emptive problems, making them prone to localized failure and a decrease in the seismic reliability of the wall. On the other hand, the bottom hinge support swing mechanism is weakly resistant to collapse due to the secondary effects of gravity, and if a certain device is damaged, the resistance to side forces decreases rapidly.

[0006] This invention proposes a low-prestress green prefabricated self-resetting wall that addresses the shortcomings of existing prefabricated self-resetting walls, solving the challenge of requiring high levels of prestress on self-resetting walls. This avoids the drawback of prefabricated self-resetting walls where seismic loads cause the foundation to lift and localized failure due to collision, reducing the subsequent seismic redundancy of the wall. Simultaneously, damaged energy-consuming components are easily replaceable, allowing for quick restoration of function after an earthquake. This invention belongs to the category of prefabricated structures, enabling industrial production in factories and rapid installation at construction sites, while being cost-effective, energy-efficient, and environmentally friendly. [Overview of the project] [Means for solving the problem]

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions. Low-prestress green prefabricated self-resetting wall, It includes a hinged support wall (1), a hinged column (2), a steel chute horizontal force transmission key (3), a low prestress demand self-resetting shear device (4), and a concrete base (5).

[0008] Hinged support columns (2) are positioned on both sides of the hinged support wall (1), and a steel chute horizontal force transmission key (3) and a low prestress demand self-resetting shear resistance device (4) are positioned intersectingly between the hinged support wall (1) and the hinged support columns (2).

[0009] The hinge support wall (1) and the hinge support column (2) are hinged to the concrete base (5) at their bottoms,

[0010] Under seismic loads, the side forces cause the hinged support wall (1) and hinged column (2) to rotate by the same angle via the steel chute horizontal force transmission key (3) and the low prestress demand self-resetting shear device (4),

[0011] The steel chute horizontal force transmission key (3), together with the low-prestress demand self-resetting shear device (4), controls the rotational coordination of the hinge support wall (1) and the hinge support column (2), while the low-prestress demand self-resetting shear device (4) consumes the energy input to the structure and reduces the residual displacement of the structure after an earthquake by self-resetting the device.

[0012] The present invention is a low-prestress green modular self-resetting wall. The wall includes a hinged support wall, a hinged column, a steel chute horizontal force transmission key, a low-prestress self-resetting shear device, and a concrete base. The hinged support wall and hinged column are fixed to the concrete base, and the intersecting steel chute horizontal force transmission key and the low-prestress self-resetting shear device connect the hinged support wall and hinged column. Under seismic loads, lateral forces rotate the hinged support wall and hinged column around their respective manifested hinge mounts. At this time, the steel chute horizontal force transmission key controls only the rotational coordination of the hinged support wall and hinged column, while the low-prestress self-resetting shear device controls the rotational coordination of the hinged support wall and hinged column and consumes the energy input to the members to achieve self-resetting of the structure.

[0013] The present invention has low construction difficulty, does not require post-tensioning a large amount of prestress to the entire wall body to achieve self-resetting, avoids the problem that applying a high level of prestress over a long period of time causes prestress loss and further leads to unstable seismic performance, and also avoids the disadvantage that local damage caused by lifting and collision of the wall foundation reduces the subsequent seismic redundancy of the prefabricated self-resetting wall.

[0014] The present invention can effectively equalize the inter-story displacement angles of each floor of a structure under seismic load, avoid the substantial reduction of the overall seismic performance of the structure caused by excessive lateral displacement of a certain floor of the structure, and can also effectively reduce the residual displacement response of the structure after an earthquake and shorten the repair time for the structure after the earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] [Figure 1] is a block diagram showing the overall structure of the low-prestress prefabricated green self-resetting wall of the present invention and the deformation mode thereof under seismic load. [Figure 2] is a structural diagram of a hinged support wall. [Figure 3] is a structural diagram of a hinged strut. [Figure 4] is a structural diagram of a steel shoe horizontal force transmission key. [Figure 5] is an exploded structural diagram of the steel shoe horizontal force transmission key. [Figure 6] is a structural diagram of a self-resetting shear device requiring low prestress. [Figure 7] is a cross-sectional view of the self-resetting shear device requiring low prestress. [Figure 8] is a structural diagram of each connecting member of a bracket and a transmission device of the self-resetting shear device requiring low prestress. [Figure 9] is a cross-sectional view of each connecting member of the bracket and the transmission device of the self-resetting shear device requiring low prestress. [Figure 10]is a structural drawing of the upper end connecting member of the self-resetting shear device requiring low prestress. [Figure 11] is a sectional view of the upper end connecting member of the self-resetting shear device requiring low prestress. [Figure 12] is a structural drawing of the left end connecting member and the right end connecting member of the self-resetting shear device requiring low prestress. [Figure 13] is a structural drawing of the lower end connecting member of the self-resetting shear device requiring low prestress. [Figure 14] is a schematic diagram of the connected disc spring set and disc spring baffle of the self-resetting shear device requiring low prestress. [Figure 15] is a schematic diagram of the energy-consuming steel rod of the self-resetting shear device requiring low prestress. [Figure 16] is a schematic diagram showing the structure and state comparison of the self-locking jig in an embodiment of the self-resetting shear device requiring low prestress. [Figure 17] is an exploded schematic diagram of the self-resetting shear device requiring low prestress. [Figure 18] is a schematic diagram showing the deformation and energy consumption mechanism of the self-resetting shear device requiring low prestress. Description of Reference Numerals

[0016] hinge supporting wall (1), wall body (1-1), prestressed reinforcement (1-2), bottom exposed hinge mount (1-3), hinge support column (2), column body (2-1), column foot exposed hinge mount (2-2), steel chute horizontal force transmission key (3), rod member (3-1), left member (3-2), right member (3-3), Low prestress demand self-resetting shear device (4), energy-consuming steel rod (4-1), core energy consumption section (4-1-1), connecting section (4-1-2), self-flocking jig (4-2), anchoring (4-2-1), clip (4-2-2), O-shaped rubber ring (4-2-3), return spring (4-2-4), ground assembly (4-2-5), high-strength steel rod (4-3), prestress screw (4-4), disc spring set (4-5), disc spring baffle (4-6), upper end connecting member (4-7), upper connecting plate (4-7-1), upper cavity (4-7-2), lower cavity (4-7-3), intermediate plate (4-7-4), The leftmost connecting member (4-8), the first cylinder (4-8-1), the first wing section (4-8-2), the first connecting plate (4-8-3), The rightmost connecting member (4-9), the second cylinder (4-9-1), the second wing section (4-9-2), the second connecting plate (4-9-3), Intermediate connecting member (4-10), Lower end connecting member (4-11), cylindrical rod member (4-11-1), bottom connecting plate (4-11-2), It is a concrete base (5). [Modes for carrying out the invention]

[0017] The technical solution of the present invention will be further described below with reference to the attached drawings.

[0018] As shown in Figure 1, the modular swing-adaptive bottom hinge-supported self-resetting wall comprises a hinge support wall (1), a hinge column (2), a steel chute horizontal force transmission key (3), a low-prestress-demand self-resetting shear device (4), and a concrete base (5). The steel chute horizontal force transmission key (3) and the low-prestress-demand self-resetting shear device (4) are positioned intersectingly between the hinge support wall (1) and the hinge column (2), and the bottoms of the hinge support wall (1) and the hinge column (2) are fixed to the concrete base (5).

[0019] As shown in Figure 2, the hinge support wall (1) comprises a wall body (1-1), prestressed reinforcing bars (1-2), and a bottom-exposed hinge mount (1-3). The wall body (1-1) serves as the main body, with prestressed reinforcing bars (1-2) placed inside the wall body (1-1), and the bottom-exposed hinge mount (1-3) installed on the concrete base (5). Furthermore, the wall body (1-1) is connected to the bottom-exposed hinge mount (1-3), which has low rigidity, via structural steel, and the wall body (1-1) rotates around the bottom-exposed hinge mount (1-3) due to side forces.

[0020] As shown in Figure 3, the hinge support (2) comprises a column body (2-1) and a column base revealing hinge mount (2-2). The column body (2-1) is mounted on a concrete base (5) and connected to the column base revealing hinge mount (2-2). The column base revealing hinge mount (2-2) has low rigidity and rotates around the column base revealing hinge mount (2-2) due to lateral forces.

[0021] Furthermore, the hinge support wall (1) and the hinge support column (2) have the same height H, and the angle at which the hinge support wall (1) and the hinge support column (2) rotate around their respective manifested hinge mounts due to the side force is denoted as α, and the displacement of the top of the wall in this invention is expressed as "?=α·H".

[0022] The horizontal force transmission key (3) includes a rod member (3-1), a left member (3-2), and a right member (3-3). The rod member (3-1) is realized by a screw and nut, the left member (3-2) is designed in a T-shape, and the right member (3-3) is designed in a π-shape. The T-shaped left member (3-2) has a long vertical chute designed on its tongue, and the π-shaped right member (3-3) has round holes designed on each of its two tongues. The screw of the rod member (3-1) is passed through the first round hole of the right member (3-3), the long chute of the left member (3-2), and the second round hole of the right member (3-3) in sequence, and then tightened and fixed with a nut at the other end.

[0023] The horizontal force transmission key (3) is fixed between the hinge support wall (1) and the hinge support column (2) by the fact that its left member (3-2) and right member (3-3) are fixed to the hinge support wall (1) and the hinge support column (2), respectively.

[0024] In actual applications, the positions of the left member (3-2) and the right member (3-3) may be interchanged.

[0025] Under earthquake loads, the side forces cause the hinge support wall (1) and hinge support column (2) to rotate around their respective bottom exposed hinge mounts. When the left member (3-2) and right member (3-3) connecting them undergo shear displacement, the rod member (3-1) slides freely vertically along the long chute of the left member (3-2), transmitting only horizontal forces and controlling the rotational coordination of the hinge support wall (1) and hinge support column (2), ensuring that there is no offset between the hinge support wall (1) and hinge support column (2) outside of the plane.

[0026] The low-prestress demand self-reset shearing device (4) will be described in detail below with reference to Figures 6-17.

[0027] The low-prestress-demand self-resetting shear device (4) includes an energy consumption system, a self-resetting prestress system, a bracket, and a transmission device, the energy consumption system and the self-resetting prestress system being attached to the bracket and transmission device. These three components, as a single unit, are connected to the outside via the bracket and transmission device, and further introduce energy from the outside. When the hinge support wall (1) and hinge support column (2) rotate around their respective bottom exposed hinge mounts under seismic load, the low-prestress-demand self-resetting shear device undergoes shear deformation (loading). During this process, the energy consumption system is stretched and undergoes yield deformation, while simultaneously the prestress screws in the self-resetting prestress system are stretched and undergo elastic deformation, the disc spring set is compressed and undergoes elastic deformation, and the reset of the low-prestress-demand self-resetting shear device is completed through the recovery force generated by the deformation of the self-resetting prestress system during the shear deformation (loading) process.

[0028] The bracket and transmission device include an upper end connecting member (4-7), a left end connecting member (4-8), a right end connecting member (4-9), an intermediate connecting member (4-10), and a lower end connecting member (4-11). Of these, the upper end connecting member (4-7), the intermediate connecting member (4-10), and the lower end connecting member (4-11) constitute the bracket for mounting the self-reset prestress system and the energy consumption system. The two end faces of the upper end connecting member (4-7) and the lower end connecting member (4-11) determine the initial length L of the low-prestress demand self-reset shear device before it is separated.

[0029] The left end connecting member (4-8) and the right end connecting member (4-9) constitute a movable nest structure, located between the upper end connecting member (4-7) and the intermediate connecting member (4-10), and are connected to the hinge support wall (1) and the hinge support column (2) through the protrusions of the wing sections. They are used to input and introduce shear displacement and energy generated when the hinge support wall (1) and the hinge support column (2) rotate around their respective manifested hinge mounts due to the action of side forces.

[0030] The movable shaft of the movable nest structure is positioned within the cavity of the upper end connecting member (4-7), with the wing portion protruding from the side wall of the cavity, and the upper and lower ends of the movable shaft making rigid contact with the upper end connecting member (4-7) and the lower end connecting member (4-11), respectively. When shear displacement is applied, the movable nest structure slides relative to each other in the direction of the shaft, separating the upper end connecting member (4-7) and the lower end connecting member (4-11) from each other.

[0031] Specifically, the upper connecting member (4-7) has a hollow cylinder as its main body, and the hollow cylinder is divided into two cavities with upper and lower holes by an intermediate plate (4-7-4). The upper connecting plate (4-7-1) is fixed to the upper opening of the upper cavity (4-7-2), and an opening is made at the bottom of the lower cavity (4-7-3). Grooves are made on the side walls symmetrically along the central axis of the cavity.

[0032] The lower end connecting member (4-11) comprises a cylindrical rod member (4-11-1) and a bottom connecting plate (4-11-2) fixed to the bottom of the cylindrical rod member (4-11-1).

[0033] A hole is provided in the center of the intermediate connecting member (4-10) for the lower cavity (4-7-3) of the upper connecting member (4-7) to pass through.

[0034] The movable nest structure includes a left-end connecting member (4-8) and a right-end connecting member (4-9), and an example is to insert the right-end connecting member (4-9) into the left-end connecting member (4-8).

[0035] The left end connecting member (4-8) comprises a first cylinder (4-8-1) with a groove in its side wall, a first wing (4-8-2), and a first connecting plate (4-8-3). The first connecting plate (4-8-3) is bolted to the wall body (1-1) of the hinge support wall (1) or the column body (2-1) of the hinge support (2), the first wing (4-8-2) is fixed to the outer wall of the first cylinder (4-8-1), and a groove is opened in the side wall of the first cylinder (4-8-1).

[0036] The rightmost connecting member (4-9) comprises a second cylinder (4-9-1), a second wing (4-9-2), and a second connecting plate (4-9-3). The second connecting plate (4-9-3) is bolted to the wall body (1-1) of the hinge support wall (1) or the column body (2-1) of the hinge support (2), and the second wing (4-9-2) is fixed to the outer wall of the second cylinder (4-9-1).

[0037] The first cylinder (4-8-1) and the second cylinder (4-9-1) are of the same height.

[0038] The second cylinder (4-9-1) is positioned inside the first cylinder (4-8-1) to form a movable shaft of the movable nest structure. The second wing portion (4-9-2) protrudes from a groove opened in the side wall of the first cylinder (4-8-1) and, together with the first wing portion (4-8-2) on the opposite side of the movable nest structure, forms a pair of wing portions of the movable nest structure.

[0039] Of course, the left end connecting member (4-8) and the right end connecting member (4-9) may be positioned opposite each other.

[0040] In the axial direction, or longitudinal direction, the movable nest structure is positioned within the lower cavity (4-7-3) of the upper end connecting member (4-7), and the first wing portion (4-8-2) and the second wing portion (4-9-2) protrude from grooves on both sides of the lower cavity (4-7-3) and are connected to the outside. The top of the movable shaft of the movable nest structure is in rigid contact with the intermediate plate (4-7-4) of the upper end connecting member (4-7), and the bottom of the movable shaft is placed on the top of the cylindrical rod member (4-11-1) of the lower end connecting member (4-11) and is in rigid contact with it. The upper and lower movable shafts are inserted into the lower cavity (4-7-3) together with the cylindrical rod member (4-11-1) and are restrained there. When energy is input from the outside, the movable nest structure slides axially relative to each other in order to displace the upper end connecting member (4-7) and the lower end connecting member (4-11) relative to each other.

[0041] Furthermore, the width W of the first wing section (4-8-2) 4-8,2is the width W of the groove opened in the lower cavity (4-7-3) of the upper end connecting member (4-7) 4-7 is smaller, and the width W of the second wing portion (4-9-2) 4-9 simultaneously is the width W of the groove opened in the first cylinder (4-8-1) of the left end connecting member (4-8) 4-8,1 and the width W of the groove opened in the lower cavity (4-7-3) of the upper end connecting member (4-7) 4-7 is smaller than both because the left end connecting member (4-8) and the right end connecting member (4-9) can slide relative to each other within the lower cavity (4-7-3).

[0042] The height H of the cylindrical rod member (4-11-1) 4-11 and the height H of the movable shaft 4-8 the sum of which is the height H of the lower cavity (4-7-3) of the upper end connecting member 4-7 is slightly larger than. In addition, when the present invention operates, in order that the cylindrical rod member (4-11-1) never separates from the lower cavity (4-7-3) of the upper end connecting member (4-7), twice the height H of the movable shaft 4-8 is smaller than the height H of the lower cavity (4-7-3) 4-7 , in short, "H 4-11 + H 4-8 ≧ H 4-7 > 2H 4-8 " satisfies the relationship.

[0043] The energy consumption system comprises two or more energy consumption steel bars (4-1).

[0044] The upper end and lower end of said energy consumption steel bar (4-1) are respectively fixed to the upper connecting plate (4-7-1) of the upper end connecting member (4-7) and the intermediate connecting member (4-10).

[0045] Since the energy consumption steel bar (4-1) is used as a consumable part, it can be replaced.

[0046] Specifically, as shown in Figure 15, the energy-consuming steel rod (4-1) has a core energy-consuming section (4-1-1) in the middle and connecting sections (4-1-2) at the top and bottom. The core energy-consuming section (4-1-1) yields and consumes energy when pulled, while the connecting section (4-1-2), having a larger diameter, does not yield during the loading process.

[0047] Furthermore, as an embodiment, threads may be engraved on the connecting portion (4-1-2) of the energy-consuming steel rod (4-1), and the upper and lower ends of the energy-consuming steel rod (4-1) may be fixed to the upper connecting plate (4-7-1) and the intermediate connecting member (4-10) of the upper connecting member, respectively, using nuts.

[0048] The self-resetting prestressing system includes a prestressing system and a self-resetting system, and is mounted on a bracket and a transmission device.

[0049] As shown in Figures 6 and 14, the prestress system includes a prestress screw (4-4), a disc spring baffle (4-6), and a disc spring set (4-5), with the disc spring baffle (4-6) being installed at the tip of the disc spring set (4-5).

[0050] The disc spring set (4-5) consists of multiple disc springs arranged in parallel, and the disc spring baffle (4-6) and the disc spring set (4-5) are located in the upper cavity (4-7-2) of the upper connecting member.

[0051] Through holes are pre-drilled in the center of the upper connecting plate (4-7-1) of the upper connecting member (4-7), the second cylinder (4-9-1) of the right connecting member (4-9), the cylindrical rod member (4-11-1) of the lower connecting member (4-11), and the bottom connecting plate (4-11-2) of the lower connecting member (4-11). The upper end of the prestress screw is fixed to the disc spring baffle (4-6), and sequentially passes through the disc spring set (4-5) and the through holes of each connecting member, and is fixed to the bottom connecting plate (4-11-2) of the lower connecting member (4-11).

[0052] Furthermore, as an example, the prestress screw (4-4) can be bolted to the upper disc spring baffle (4-6) and the bottom connecting plate (4-11-2) of the lower end connecting member (4-11).

[0053] The self-reset system includes a self-locking jig (4-2) and a high-strength steel rod (4-3). The self-locking jig (4-2) is fixed to an intermediate connecting member (4-10), and the high-strength steel rod (4-3) is installed between the intermediate connecting member (4-10) and the lower end connecting member (4-11).

[0054] As shown in Figure 6, specifically, a self-locking jig (4-2) is connected to the upper end of a high-strength steel rod (4-3), and the lower end of the high-strength steel rod (4-3) is fixed to the bottom connecting plate (4-11-2) of the lower end connecting member (4-11), thereby jointly forming a unidirectional force transmission element.

[0055] Furthermore, as an example, the self-locking jig (4-2) can be fixed to the intermediate connecting member (4-10). On the other hand, the high-strength steel rod (4-3) can be fixed to the bottom connecting plate (4-11-2) of the lower end connecting member (4-11) with a nut.

[0056] Specifically, as shown in Figure 16, the self-locking fixture (4-2) in the self-reset system includes an anchoring ring (4-2-1), a clip (4-2-2), an O-shaped rubber ring (4-2-3), a return spring (4-2-4), and a ground assembly (4-2-5).

[0057] Of these, the clip (4-2-2) is multi-slice, built into the anchoring ring (4-2-1), and surrounds the outside of the high-strength steel rod (4-3). An O-shaped rubber ring (4-2-3) fitted into a groove open at its end allows the clip (4-2-2) to work stably within the cavity between the anchoring ring (4-2-1) and the high-strength steel rod (4-3).

[0058] The return spring (4-2-4) is installed on top of the clip (4-2-2), and the high-strength steel rod (4-3) passes through the return spring (4-2-4).

[0059] The ground assembly (4-2-5) is positioned on top of the anchoring ring (4-2-1) and resists the return spring (4-2-4), stabilizing the axial direction during operation.

[0060] As described above, when pulled, the self-locking fixture (4-2) receives force through the engagement of the multi-slice clips (4-2-2) with the high-strength steel rod (4-3) surrounded by the clips (4-2-2).

[0061] On the other hand, when compressed, the clip (4-2-2) and the high-strength steel rod (4-3) loosen, allowing them to slide relative to each other, and the self-locking jig (4-2) is not subjected to any force.

[0062] In the embodiment, the structure and operating principle of the self-locking jig are as shown in Figure 16.

[0063] As shown in Figure 16(a), which is a diagram illustrating the anchor (force-receiving) state of the high-strength steel rod, in the energy consumption phase of the device, the clip (4-2-2) engages with the high-strength steel rod (4-3), receives force, and pulls the energy-consuming steel rod (4-1), thereby consuming energy.

[0064] On the other hand, as shown in Figure 16(b), which is a diagram of the high-strength steel rod in a sliding (unforced) state, in the reset step, the clip (4-2-2) no longer engages with the high-strength steel rod (4-3), the return spring (4-2-4) is compressed, and neither the clip (4-2-2) nor the high-strength steel rod (4-3) is subjected to force. In addition, the self-locking jig (4-2) and the intermediate connecting member (4-10) slide toward the lower end connecting member (4-11), preventing the energy-consuming steel rod (4-1), which is pulled during the energy consumption stage, from being compressed.

[0065] Figure 1 shows the changes in the working state of the entire shear wall and the horizontal force transmission key (3) of the present invention, namely the "initial state," "loaded state," and "reset state." In contrast, Figure 18 shows the changes in the working state (initial state, loaded state, reset state) of the low-prestress demand self-reset shear device (4). The following provides a detailed explanation.

[0066] As shown in Figure 1(a), the entire shear wall is in its initial state without any external force input.

[0067] In the initial state of the shearing device (4), as shown in Figure 18(a), the top of the movable shaft of the movable nest structure, which consists of the left end connecting member (4-8) and the right end connecting member (4-9), is in close contact with the intermediate plate (4-7-4) of the upper end connecting member (4-7). The disc spring set (4-5) is slightly compressed in the initial state due to the need for prestress. Meanwhile, the energy-consuming steel rod (4-1) is stationary on the device, and the self-locking jig (4-2) is engaged with the high-strength steel rod (4-3).

[0068] In this case, the distance between the upper end connecting member (4-7) and the lower end connecting member (4-11) is expressed as "L = L1 + L2". Of these, the distance between the upper end connecting member (4-7) and the intermediate connecting member (4-10) is L1, and the distance between the intermediate connecting member (4-10) and the lower end connecting member (4-11) is L2.

[0069] As shown in Figure 1(a), the initial state of the horizontal force transmission key (3) is that there is no external force input, and at this time, the screw of the rod member (3-1) is stable in the middle position of the long chute of the left member (3-2).

[0070] External side forces cause shear deformation, resulting in a loaded state.

[0071] As shown in Figure 1(b), the entire shear wall is under load. The angle at which the hinge support wall (1) and the hinge support column (2) rotate around their respective bottom hinge mounts is indicated as α.

[0072] As shown in Figure 18(b), the shearing device (4) is under load. The left-end connecting member (4-8) and the right-end connecting member (4-9) of the bracket and transmission device shift relative to each other due to the rotation of the hinge support wall (1) and the hinge support column (2), causing the upper-end connecting member (4-7) and the lower-end connecting member (4-11) to be displaced relative to each other along the axial direction. At this time, the disc spring set (4-5) in the prestress system is continuously compressed within the upper cavity (4-7-2), storing energy. Simultaneously, in the self-reset system, the self-locking jig (4-2) engages with the high-strength steel rod (4-3) (clamped), exhibiting a self-locking function. Also simultaneously, the energy-consuming steel rod (4-1) outside the upper cavity (4-7-2) enters the energy-consuming mechanism, and all the energy-consuming material is stretched to a long length, undergoing yield deformation and consuming energy. The stretched length is indicated by ?L.

[0073] The self-locking jig (4-2) continuously engages with the high-strength steel rod (4-3), meaning that the high-strength steel rod (4-3) moves together with the lower end connecting member (4-11) (displaced in a direction away from the upper end connecting member (4-7)).

[0074] During this time, the distance between the intermediate connecting member (4-10) and the lower connecting member (4-11) remains L2, and simultaneously, the distance between the upper connecting member (4-7) and the intermediate connecting member (4-10) is L1 + ΔL. At the same time, the left member (3-2) and the right member (3-3) of the steel chute horizontal transmission key (3) are misaligned, and the relative displacement is ΔL.

[0075] Of these, as shown in Figure 1(b), the horizontal force transmission key (3) is under load. Due to the input of an external force and the rotation of the hinge support wall (1) and hinge column (2), the left component (3-2) and the right component (3-3) are misaligned, and the relative displacement is ΔL.

[0076] The external side force is removed, and the system is completely reset.

[0077] Figure 1(c) shows the state after the shear wall's hinge support wall (1) and hinge support column (2) rotate around their respective bottom hinge mounts at a reduced angle, and the load on the shear wall is removed.

[0078] The state of the shearing device (4) is as shown in Figure 18(c). As the displacement between the left-end connecting member (4-8) and the right-end connecting member (4-9) begins to decrease, the prestress system, in which the prestress screw (4-4) and the disc spring set (4-5) are connected in series, generates a reset due to compression. With the reset of the prestress system, the high-strength steel rod (4-3) and the self-locking jig (4-2) in the self-reset system release their locking function, allowing them to slide relative to each other, and the high-strength steel rod (4-3) protrudes from the self-locking jig (4-2). Because frictional force is avoided during the reset, the reset target can be achieved with minimal prestress.

[0079] At this point, the left end connecting member (4-8), the right end connecting member (4-9), and the disc spring set (4-5) of the shearing device return to their initial state, the distance between the upper end connecting member (4-7) and the lower end connecting member (4-11) returns to its initial state L, and simultaneously the distance between the upper end connecting member (4-7) and the intermediate connecting member (4-10) remains L1+ΔL. The distance between the intermediate connecting member (4-10) and the lower end connecting member (4-11) becomes L2-ΔL.

[0080] Of these, as shown in Figure 1(c), the horizontal force transmission key (3) has returned completely to its initial state. At this time, the screw of the rod member (3-1) is once again stable in the middle position of the long chute of the left member (3-2).

[0081] In practical applications, a low-prestress, self-resetting shear device has three states: State 1 (initial state), State 2 (loaded state), and State 3 (reset state). In contrast, the return spring of the self-locking jig is in different degrees of compression, thus maintaining engagement (transmission force) and ensuring rigidity. Furthermore, the high-strength steel rod moves together with the lower end connecting member (displaced in a direction away from the upper end connecting member), thus accommodating the transition from State 1 to State 2.

[0082] The following provides a detailed explanation.

[0083] State 1 (Initial State): The return spring is compressed, applying pressure to the clip. At this time, the clip applies pressure to the wedge-shaped inner wall of the anchoring and engages with the high-strength steel rod.

[0084] State 2 (Loaded State): The return spring is compressed, applying a similar amount of pressure to the clip. The high-strength steel rod tends to move downwards, and the frictional force between it and the clip causes the clip to apply greater pressure to the wedge-shaped inner wall of the anchoring than in State 1, causing the clip to engage with the high-strength steel rod more persistently.

[0085] State 3 (Reset State): The return spring is still compressed (the degree of compression is slightly increased). As shown in Figure 16, the high-strength steel rod tends to move upward, and in this state the frictional force between it and the clip causes the clip to exert less pressure on the wedge-shaped inner wall of the anchoring than in State 1, or no pressure at all, and the clip no longer engages with the high-strength steel rod.

[0086] The role of the return spring is to prevent the clip from moving along with the high-strength steel rod when it moves upward.

[0087] To achieve the self-resetting properties, an initial prestress is applied to the low-prestress-demand self-resetting shear device of the present invention. Furthermore, the sum of the applied initial prestresses needs to be only 2-3% of the yield strength of the self-resetting shear wall.

[0088] Note: In this field, high-level prestress generally refers to the initial prestress required to apply to a self-resetting shear wall being approximately 50% of its yield strength.

[0089] Therefore, this invention proposes a low-prestress, green, prefabricated, self-resetting wall, solving the challenge of the need to apply a high level of prestress to self-resetting walls. Furthermore, under seismic loads, the prefabricated self-resetting wall avoids the drawback of reduced subsequent seismic redundancy of the wall body due to localized failure caused by the lifting of the foundation and collision. At the same time, damaged energy-consuming components are easily replaceable, allowing for quick restoration of function after an earthquake. This invention belongs to the category of prefabricated structures, enabling industrial production in factories and rapid installation at construction sites, and is cost-effective, energy-efficient, and environmentally friendly.

[0090] The advantages of this invention are as follows:

[0091] The construction difficulty is low, and there is no need to post-tension a large amount of prestress on the entire wall structure to achieve self-reset.

[0092] This design avoids the loss of prestress caused by applying a high level of prestress over a long period of time, which would further destabilize the seismic performance.

[0093] This design avoids the drawback of reduced subsequent seismic redundancy in prefabricated self-resetting walls due to localized failure caused by the lifting and collision of the wall's foundation.

[0094] The walls and columns are connected to each floor of the building. Under earthquake loads, this effectively ensures that the displacement angles between floors of the structure are the same, preventing excessive lateral displacement on any floor and thus avoiding a significant decrease in the overall seismic performance of the structure.

[0095] After the earthquake, structural repairs could be completed simply by replacing the energy-consuming components of the low-prestress green, prefabricated, self-resetting wall, thus shortening repair time and reducing costs.

[0096] The above are merely typical embodiments of the present invention, and the implementation of the present invention is not limited thereto.

[0097] This invention offers ease of construction, eliminates the need to post-tension a large amount of prestress across the entire wall to achieve self-reset, avoids prestress loss caused by applying high levels of prestress over a long period, and prevents instability in seismic performance. It also avoids the drawback of reduced subsequent seismic redundancy of prefabricated self-reset walls due to localized failure caused by the lifting and collision of the wall foundation. Furthermore, since the wall and column bodies of this invention are connected to each floor of the building, under earthquake loads, the displacement angles between floors of the structure can be effectively made the same. This prevents excessive lateral displacement on certain floors of the structure, which would significantly reduce the overall seismic performance of the structure. It also effectively reduces the response of residual displacement of the structure after an earthquake, shortening the repair time for the structure after an earthquake.

Claims

1. Hinge support wall (1), The hinge support columns (2) are arranged on both the left and right sides of the hinge support wall (1), A horizontal force transmission key (3) is positioned between the hinge support wall (1) and the hinge support column (2), A self-resetting shear device (4) is positioned between the hinge support wall (1) and the hinge support column (2), The system includes the hinge support wall (1) and the concrete base (5) that supports the hinge support column (2), The hinge support wall (1) and the hinge support column (2) are each supported at their lower ends via hinge connection portions provided on the concrete base (5). The horizontal force transmission key (3) and the self-resetting shear device (4) are arranged alternately with respect to each other along the vertical direction between the hinge support wall (1) and the hinge support column (2). The horizontal force transmission key (3) is provided so as to be relatively movable in accordance with the relative displacement occurring between the hinge support wall (1) and the hinge support column (2), and maintains rotational coordination between the hinge support wall (1) and the hinge support column (2) by transmitting horizontal force. When a lateral force due to an earthquake load is applied, the hinge support wall (1) and the hinge support column (2) each rotate in the in-plane direction of the hinge support wall (1) around the hinge connection portion provided in the concrete base (5). The self-correcting shear device (4) is characterized by generating shear deformation in response to the relative displacement between the hinge support wall (1) and the hinge support column (2), thereby consuming energy, and reducing residual displacement after an earthquake through its self-correcting action.

2. The hinge support wall (1) includes a wall body (1-1), prestressed reinforcing bars (1-2) arranged inside the wall body (1-1), and a rotatably formed hinge mount (1-3) provided on the concrete base (5). The assembly-type self-returning wall according to claim 1, characterized in that the wall body (1-1) is connected to the hinge mount (1-3) and is configured to be rotatable about the hinge mount (1-3) by the action of a lateral force.

3. The hinge support (2) includes a column body (2-1) and a column base hinge mount (2-2), with the column body (2-1) being the main body and the column base hinge mount (2-2) being provided on a concrete base (5). The prefabricated self-correcting wall according to claim 2, characterized in that the column (2-1) is connected to a column base hinge mount (2-2) with low rigidity, and the column (2-1) rotates around the column base hinge mount (2-2) due to lateral forces.

4. The horizontal force transmission key (3) is It includes a rod member (3-1), a left member (3-2), and a right member (3-3), The rod member (3-1) consists of a screw and a nut, the left member (3-2) is T-shaped, and the right member (3-3) is π-shaped. The T-shaped left member (3-2) has a long, elongated slot extending in the vertical direction on its tongue, and the π-shaped right member (3-3) has round holes formed on each of its two tongues. The rod member (3-1) is positioned to pass through one round hole in the right member (3-3), the elongated slot in the left member (3-2), and the other round hole in the right member (3-3) in that order, and is fastened and secured at the other end with a nut. The left member (3-2) and the right member (3-3) are fixed to the hinge support wall (1) and the hinge support column (2), respectively. When a lateral force due to an earthquake load is applied, the hinge support wall (1) rotates in the plane of the hinge support wall about the hinge mount (1-3) at its bottom, and the hinge support column (2) rotates in the plane of the hinge support wall about the column base hinge mount (2-2), causing a shear displacement between the left member (3-2) and the right member (3-3). In this case, the rod member (3-1) is movable vertically within the elongated slot and transmits only horizontal force, thereby maintaining rotational coordination between the hinge support wall (1) and the hinge support column (2), and preventing out-of-plane displacement of the hinge support wall (1) and the hinge support column (2), as described in claim 3.

5. The self-resetting shear device (4) includes an energy consumption system, a resetting prestress system, a bracket and a transmission device, the energy consumption system and the resetting prestress system being attached to the bracket and the transmission device, The self-resetting shear device (4) is installed between the hinge support wall (1) and the hinge support column (2). When a lateral force due to an earthquake load is applied, the hinge support wall (1) rotates in the plane of the hinge support wall about the hinge mount (1-3) at its bottom, and the hinge support column (2) rotates in the plane of the hinge support wall about the column base hinge mount (2-2), causing shear deformation to occur in the self-recovering shear device (4). At this time, the energy consumption system undergoes tensile yield deformation, thereby dissipating the energy input to the structure, The prestress screw (4-4) provided in the return prestress system undergoes tensile elastic deformation, and the disc spring set (4-5) undergoes compressive elastic deformation. The self-recovering shear device is restored to its original position by the restoring force generated by these elastic deformations, thereby reducing the residual displacement of the prefabricated self-recovering wall after an earthquake, as described in claim 3.

6. The bracket and transmission device include an upper end connecting member (4-7), a left end connecting member (4-8), a right end connecting member (4-9), an intermediate connecting member (4-10), and a lower end connecting member (4-11). The upper connecting member (4-7), the intermediate connecting member (4-10), and the lower connecting member (4-11) constitute a bracket for attaching the return prestressing system and the energy consumption system. The two end faces of the upper end connecting member (4-7) and the lower end connecting member (4-11) determine the initial length L in the longitudinal direction before the self-recovering shear device separates, The left end connecting member (4-8) and the right end connecting member (4-9) constitute a movable nest structure, and are located between the upper end connecting member (4-7) and the intermediate connecting member (4-10). The left end connecting member (4-8) and the right end connecting member (4-9) are provided with wing portions, and these wing portions are connected to the hinge support wall (1) and the hinge support column (2), When a lateral force due to an earthquake load is applied, the hinge support wall (1) rotates in the plane of the hinge support wall about the hinge mount (1-3) at its bottom, and the hinge support column (2) rotates in the plane of the hinge support wall about the column base hinge mount (2-2). The shear displacement generated as a result of this rotation is input to the movable nest structure. The movable shaft of the movable nest structure is positioned within the cavity of the upper end connecting member (4-7), and the wing portion protrudes from the side wall of the cavity of the upper end connecting member (4-7). The upper end of the movable shaft is in rigid contact with the upper end connecting member (4-7), and the lower end of the movable shaft is in rigid contact with the lower end connecting member (4-11). The assembled self-returning wall according to claim 5, characterized in that when a shear displacement is input to the movable nest structure, the movable nest structure slides in the axial direction of the movable shaft, thereby separating the upper end connecting member (4-7) and the lower end connecting member (4-11) relative to each other.

7. The upper connecting member (4-7) has a hollow cylinder as its main body, and the hollow cylinder is divided into two cavities with upper and lower holes by an intermediate plate (4-7-4), the upper connecting plate (4-7-1) is fixed to the upper opening of the upper cavity (4-7-2), an opening is made at the bottom of the lower cavity (4-7-3), and grooves are made on the side walls symmetrically along the central axis of the cavity, The lower end connecting member (4-11) comprises a cylindrical rod member (4-11-1) and a bottom connecting plate (4-11-2) fixed to the bottom of the cylindrical rod member (4-11-1), The intermediate connecting member (4-10) has a hole in its center for the lower cavity (4-7-3) of the upper connecting member (4-7) to pass through, The aforementioned movable nest structure comprises a left end connecting member (4-8) and a right end connecting member (4-9), the right end connecting member (4-9) being inserted into the left end connecting member (4-8), The left end connecting member (4-8) comprises a first cylinder (4-8-1) with a groove in its side wall, a first wing (4-8-2), and a first connecting plate (4-8-3). The first connecting plate (4-8-3) is bolted to the wall body (1-1) of the hinge support wall (1) or the column body (2-1) of the hinge support (2), the first wing (4-8-2) is fixed to the outer wall of the first cylinder (4-8-1), and a groove is opened in the side wall of the first cylinder (4-8-1). The rightmost connecting member (4-9) comprises a second cylinder (4-9-1), a second wing (4-9-2), and a second connecting plate (4-9-3). The second connecting plate (4-9-3) is bolted to the wall body (1-1) of the hinge support wall (1) or the column body (2-1) of the hinge support (2), and the second wing (4-9-2) is fixed to the outer wall of the second cylinder (4-9-1). The first cylinder (4-8-1) and the second cylinder (4-9-1) are of the same height, The second cylinder (4-9-1) is positioned inside the first cylinder (4-8-1) to form a movable shaft of the movable nest structure, and the second wing portion (4-9-2) protrudes from a groove opened in the side wall of the first cylinder (4-8-1), and together with the first wing portion (4-8-2) on the opposite side of the movable nest structure, they form a pair of wing portions of the movable nest structure. The modular self-recovering wall according to claim 6, characterized by the above.

8. In the axial direction, or longitudinal direction, the movable nest structure is positioned within the lower cavity (4-7-3) of the upper end connecting member (4-7), and the first wing portion (4-8-2) and the second wing portion (4-9-2) protrude from grooves on both sides of the lower cavity (4-7-3) and are connected to the outside. The upper end of the movable shaft of the movable nest structure is in rigid contact with the intermediate plate (4-7-4) of the upper end connecting member (4-7), and the bottom of the movable shaft is placed on the top of the cylindrical rod member (4-11-1) of the lower end connecting member (4-11) and is in rigid contact with it. The overlapping movable shafts are inserted into the lower cavity (4-7-3) along with the cylindrical rod member (4-11-1) and are constrained there, The assembled self-returning wall according to claim 7, characterized in that when energy is input from the outside, the movable nest structure slides axially relative to each other in order to displace the upper end connecting member (4-7) and the lower end connecting member (4-11) relative to each other.

9. The assembly-type self-returning wall according to claim 7, characterized in that the width W4-8,2 of the first wing portion (4-8-2) is smaller than the width W4-7 of the groove opened in the lower cavity (4-7-3) of the upper end connecting member (4-7), and the width W4-9 of the second wing portion (4-9-2) is simultaneously smaller than the width W4-8,1 of the groove opened in the first cylinder (4-8-1) of the left end connecting member (4-8) and the width W4-7 of the groove opened in the lower cavity (4-7-3) of the upper end connecting member (4-7), because the left end connecting member (4-8) and the right end connecting member (4-9) can slide against each other within the lower cavity (4-7-3).

10. The assembly-type self-removing wall according to claim 7, characterized in that the sum of the height H4-11 of the cylindrical rod member (4-11-1) and the height H4-8 of the movable shaft is slightly greater than the height H4-7 of the lower cavity (4-7-3) of the upper end connecting member, and in order for the cylindrical rod member (4-11-1) to not detach from the lower cavity (4-7-3) of the upper end connecting member (4-7), twice the height H4-8 of the movable shaft is less than the height H4-7 of the lower cavity (4-7-3), thereby satisfying the relationship "H4-11 + H4-8 ≥ H4-7 > 2H4-8".

11. The aforementioned energy consumption system includes two or more energy-consuming steel rods (4-1), The assembled self-returning wall according to claim 5, characterized in that the upper and lower ends of the energy-consuming steel rod (4-1) are fixed to the upper connecting plate (4-7-1) and intermediate connecting member (4-10) of the upper connecting member (4-7), respectively.

12. The aforementioned prestress system for repositioning includes a prestress system and a self-repositioning system, The prestress system includes a prestress screw (4-4), a disc spring baffle (4-6), and a disc spring set (4-5), wherein the disc spring baffle (4-6) is installed at the tip of the disc spring set (4-5), The disc spring set (4-5) is composed of multiple disc springs arranged in parallel, and the disc spring baffle (4-6) and the disc spring set (4-5) are located within the upper cavity (4-7-2) of the upper connecting member. The upper connecting plate (4-7-1) of the upper end connecting member (4-7), the second cylinder (4-9-1) of the right end connecting member (4-9), the cylindrical rod member (4-11-1) of the lower end connecting member (4-11), and the center of the bottom connecting plate (4-11-2) all have pre-drilled through holes. The upper end of the prestress screw is fixed to the disc spring baffle (4-6), and sequentially passes through the disc spring set (4-5) and the through holes of each connecting member, and is also fixed to the bottom connecting plate (4-11-2) of the lower end connecting member (4-11). The self-returning system includes a self-locking jig (4-2) and a high-strength steel rod (4-3), The self-locking jig (4-2) is fixed to the intermediate connecting member (4-10), and the high-strength steel rod (4-3) is installed between the intermediate connecting member (4-10) and the lower end connecting member (4-11). Specifically, the assembled self-resetting wall according to claim 6 is characterized in that a self-locking jig (4-2) is connected to the upper end of a high-strength steel rod (4-3), and the lower end of the high-strength steel rod (4-3) is fixed to the bottom connecting plate (4-11-2) of the lower end connecting member (4-11), thereby jointly forming a unidirectional force transmission element.

13. The self-locking jig (4-2) in the self-returning system includes an anchoring ring (4-2-1), a clip (4-2-2), an O-shaped rubber ring (4-2-3), a return spring (4-2-4), and a ground assembly (4-2-5). The clip (4-2-2) is multi-slice, built into the anchoring ring (4-2-1), surrounding the outside of the high-strength steel rod (4-3), and the O-shaped rubber ring (4-2-3) is set in a groove open at the end of the clip (4-2-2), so that the clip (4-2-2) To enable stable operation within the cavity between the anchoring (4-2-1) and the high-strength steel rod (4-3), The return spring (4-2-4) is installed on top of the clip (4-2-2), and the high-strength steel rod (4-3) passes through the return spring (4-2-4), The ground assembly (4-2-5) is positioned on top of the anchoring ring (4-2-1) and resists the return spring (4-2-4), stabilizing the axial direction during operation. The self-locking jig (4-2) is characterized in that when a tensile load is applied between the intermediate connecting member (4-10) and the lower end connecting member (4-11), the self-locking jig (4-2) receives the force through the engagement of the multi-slice clip (4-2-2) with the high-strength steel rod (4-3) surrounded by the clip (4-2-2), but when a compressive load is applied between the intermediate connecting member (4-10) and the lower end connecting member (4-11), the clip (4-2-2) and the high-strength steel rod (4-3) loosen, causing them to slide relative to each other, and the self-locking jig (4-2) does not receive the force.

14. The prefabricated self-correcting wall according to claim 1 is characterized in that the concrete base (5) is used to fix and attach the hinge support wall (1) and the hinge support column (2), and is provided below ground level.

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